Year	% of GDP
1967	12.816592554329706
1968	12.356373687271711
1969	12.079524948674369
1970	12.797087717808676
1971	12.878044396244782
1972	12.818291701833104
1973	14.235715366999937
1974	16.330806884118473
1975	18.977966359383014
1976	18.63054600172218
1977	20.078577168520408
1978	20.264176471011393
1979	19.15902252400063
1980	20.11700727928729
1981	20.636898513202084
1982	20.74051480838052
1983	20.339557134514987
1984	19.098540265931852
1985	17.580846005230338
1986	16.55099778943503
1987	16.97364945533669
1988	18.591234494359117
1989	19.823929799130855
1990	19.617607441903264
1991	20.38741632183799
1992	21.027861827771435
1993	20.22622583539448
1994	20.108732413714254
1995	22.23033771921477
1996	22.73789208834215
1997	23.435340972426346
1998	23.223268466443077
1999	22.054949002120754
2000	23.23065994141723
2001	22.6815192711442
2002	23.9327192052771
2003	24.015544432829756
2004	26.02133243395085
2005	26.80140472999576
2006	27.764558915472026
2007	28.370745727518937
2008	30.031691428387802
2009	26.964392111417556
2010	27.085381322458467
2011	28.549522212444156
2012	29.096614193945225
2013	28.890976521482457
2014	28.590680022723554
2015	26.6147677578555
2016	25.094117217477553
2017	26.027414074033693
2018	27.758592561705044
2019	26.328953912627046
2020	23.77397403650195
2021	26.933708170232162
2022	29.705407292343928
2023	27.50560583011315